Attachment for woodworking shapers



July 14, 1953 O. P. SMITH ATTACHMENT FOR WOODWORKING SHAPERS 3heetS-Sheet 1 Filed April 7, 1952 INVENTOR. UASON P. JM/ TH BY f/gazgwwJuly 14, 1953 o. RSMITH ATTACHMENT FOR woonwonxmc SHAPERS Filed April 7,.1952

3 Sheets-Sheet 2 INVENTOR. 0250 P SMITH K] TTOK N E 75 July 14, 1953 o.-P. SMITH 2,645,

ATTACHMENT FOR WOODWORKING SHAPERS,

Filed April 7, 1952 3'Sheets-Sheet :5

IN VEN TOR. OBJON P. SMITH Patented July 14, 1953 .f UNlTED ATTACHMENTFOR WOODWORKING SHAPERS Orson P. Smith, Seattle, Wash.

Application April 7, 1952, Serial No. 280,919

This invention relates to improvements in wood working machines of theshaper types. More particularly, it has reference to the equipping of ashaper type machine with devices of novel construction and arrangementthat adapts it for the manufacture of window sash parts and the like;thatis, a machine equipped with a cutter head designed to out tenons,grooves, or slots, and to shape the surfaces of pieces such as thoseused in the making of window sash and a carriage whereby pieces for thatpurpose may be held in position and moved past the cutter head for itsoperation thereon.

More specifically stated, the present invention resides in the provisionof certain attachment parts designed for application to a well knowntype of shaper, now in general use, whereby wooden pieces, such as usedfor the making of window sash, can be readily formed with the necessarygrooves and tenons for their being fitted, joinedand secured together.

Another object of the invention is to provide a combination of parts forthe above purpose that may be applied to the frame structure of theselected shaper without requiring that it be reconstructed. i

Yet another object of the invention resides in the-provision ofattachment parts of the char acter and for. the purpose above recitedthat are substantial and-long lasting; that are easy to use and whichprovide for the holding and moving of a plurality of pieces for thesimultaneous formation of grooves and'tenons therein.

Still .further objects of the invention reside in the details ofconstruction and combination of 3 Claims. (Cl. 144--136) parts, and intheir mode of use, as will hereinafter be fully described.

, In; accomplishing the above mentioned and other objects of theinvention, I have provided th'e'improved details of construction, thepreferred' forms of which are illustratedin the accompanying drawings,wherein Fig. 1 is a'perspective view of a shaper of that type or kind towhich the present invention has been designed for attachment.

Fig. 2 is a top or plan view of the present mechanism as applied to theshaper after removalo the usualtable top from the latter.

Fig. 3 is anend view of the shaper with the present attachment partsapplied thereto.

Fig. 4 is an enlarged back side elevation of parts of theshaper, andthe'present attachment parts applied thereto; a part of the shaper framestructure being brokenaway for better showing of the carriage andtrackway. a

Fig.5 is a perspective view of the end portion of a wooden window sashrail, as formed with a tenon by use of the present devices.

Fig. 6 is a perspective view of the end portion of a sash rail as formedwith a groove by use of the present devices.

Referring more in detail to the drawings- For better understanding ofthe present invention, I have, in Fig. 1, illustrated a type of shaperto which, after removal therefrom of the usual table top and cutterhead, the present equipment may be readily applied to complete thepresent invention. The machine, as shown in Fig. 1, is complete as ashaper. It comprises a metal base frame structure In, of hollow housingform and on which a horizontal table top I2 is removably secured. Toadapt the base for the purpose of mounting and'securing the table top,it is formed at its upper or top edge with laterally projecting flangesl3, as shown in Fig. 2, and these are formed with holes 14 through whichthe bolts which secure the table top in place may be applied. Afterremoval of the table top from the base structure It), as has beenindicated in Fig, 2, a saw-dust and chip collecting hood I5, for use aspresently explained may be secured thereto by clips [6 and bolts l1. 1 pr The shaper also is equipped with a vertical, cutter head mountingshaft l8 that has a driving pulley wheel i9 fixed thereto. An electricmotor 20 is adjustably mounted on the back wallof the frame ID, asillustrated in Figs. 3 and 4, and this i has a pulley wheel '22. fixedon its drive shaft 23. Abelt 24 operates about the'pulleys l9 and 22 inthe usual Way to drive the shaft I8. The shaft 18 which in the presentadaptation mounts the groove and tenon cutter heads, presently to bedescribed, is rotatably mounted in a bearing 25, that is verticallyadjustable in guideways 26-26, as shown in Fig. l, and verticaladjustment thereof is effected by means of a vertical screw threadedshaft 30 that is revolubly fixed at its lower end in a bracket 3|rigidly mounted on the front wall of the frame structure 10,- andthreaded through a forwardly-projecting flange or lug 32 on the bearing25. A hand wheel 33 is fixed to the lower end of the shaft 30 foritsrotation to effect vertical adjustment of the bearing in which theshaft miscarried. l

- The present equipment comprises. as its principal parts, a wheelsupported carriage with a material holding clamp mounted thereon, and atrack structure on which the carriage is mounted for reciprocal movementto carry. wooden pieces, asgclamped thereon, pastspecial cutters ofcutter.

heads that are fixed on the motor driven shaft l 8.

In Figs. 2 and 3, it is shown that the cover plates of the bearingguideways 2626 have been removed and paired brackets 40-40 have beenbolted to the front wall of the base frame structure ID to extend inparallel relationship directly forward therefrom.

In so attaching the brackets 40-40, the bolts and bolt holes providedfor the securement of the cover plates for the guideways, 26-26 areused. The base portions 40:r40r of the brackets 4040 when secured inplace by the bolts 4|, serve the purpose of the cover plates to hold thebearing 25 in place.

The brackets 4040 as thus secured, serve as" supports for two spaced andparallel rausnane 43 which, as presently explained provide a track thatsupports the carriage for its reciprocal travel. The rails are fixed inplace by bolts 45 that extend upwardly through flanges of the bracketsand are threadedinto the rails in the manner shown in Fig. 3. The rail43 has a flat top surface but rail 42 has a longitudinal ridge formedthereon as seenin Figs. 2 and 3.

The carriage used in this combination com prises a horizontally disposedrectangular plate 50, supported at one end by means of two groovedrollers 52 that travelon the ridge shaped rail 42. At its other end, itis equipped with two rollers 53 that travel on the flat top surface ofrail 43. The rails are .of; such length that the carriage can be movedin either direction thereon past the cutter head on shaft l8, as hasbeen indicated in Fig. 2, and suitablemeans is provided to keep therollers on the rails.

At: emeral hem-late 3- 5.0. has upstand n verticalfla-nge fixed thereto,and adjacent the flange ashelfor block 51, as best shown in Figs. 2 and4,.-is d the n- The present use of the'combination of parts is for theformation of grooves and tenons on wooden, railsjtoj.;be;used for themaking of window sash; some railsbeing formed at their opposite endswith ,tenons; as that designated at 60 on the rail-til; in Fig. Otherrails are formed with grooves, asthat designated at 62 in the rail 63 inFig. 6.

for the-purpose of; cutting such grooves and tenonfhall have applied asuccession of cutter heads ;to th per end of the shaft 18, and have so,arrangedgthem thereon that if it is desired, two sash rails can-beworked .on at the same time, to form one with a, tenon and the otherwith a groove. Thegwthree cutter heads herein employed are arranged inspaced relationship on the upper end of the shaft was; shown in Figs. 2,3 and 4. The two upp.er, .cutter heads comprise the disks 65 and G6which areof substantially the same diameter, andspaced apart as shown.Mounted in the peripheral portions of these disks are shaper cutters 51and 68 as seen in Fig. 4. These two cutter heads are at such position onshaft l8 relative to the line ,of travel of the carriage, that when aWooden rail, placed on the carriage in the position ofthat idesignatedat in Fig. 4, is moved past the-cutter heads 65 and 66 the cuttersthereon will operate tov cut material from the top and lowersides of thepiece, thus to provide itwith a tenonvsuch as that shown at 60 on thepiece-6,! ;in3Fig g5.

.,It. will "be here explained that the wooden piece, or ra il; 1:0 .forthisgparticular tenoning operation, isplaced flatly;.-upon the shelf510i the carriage 4 and against the vertical flange 56, and i heldsecurely in that position while the carriage is moved along thetrackways to advance it past the cutter heads.

For the grooving of the end of a rail, in the manner illustrated in Fig.6, I utilize the lowest of three assembled cutter heads. This headcomprises a disk-like body 12 equipped at its periph- V cry with cutters[3; the disk bodybeing so disposed on the shaft it that it will operateon a piece or rail that has been properly placed on the carriage, flatlyupon the base plate 50 thereof and against the vertical face of theshelf 51,

as is the piece 14 in Fig. 4.

The three cutter heads are equipped with spacing collars, as at 15, andthe assembly of heads is normally locked on the shaft by a nut 16 thatis threaded" onto the upper end of the shaft and tightened thereagainst.It will be understood that the wooden rails can be worked on indi-vvidually if such is desired, or they can be worked on simultaneously.vAlso, the cutter heads can be adapted for work on rails of differentthickness by use of spacing collars of different length or thickness. YI I In order to hold the rails secure, I have equipped the carriage witha clamp comprising a horizontally directed hand lever 80, fixed at oneend by a pivot bolt 8| to -the upper end of a post 82 that is fixedvertically. to the forward edge of the carriage as best shown in Fig. 4.The lever extends in a horizontal direction across and beyond the rearedge of the carriage. Pivotedon the lever between its ends, as at 84, isa downwardly directed leg 85 with arcuate foot 86 adapted to engage withthe rail to be worked on.

Downward pressure on the rear end of the lever 85) will operate to holdthe engaged rail securely in position while advanced by the carriageagainst the cutter head. The position of attachment of the leg 85 tolever can be changed to meet requirements, that is, for holding a railin the position of that designated at 10 in Fig. 4, or one in theposition of thatdesignated at 14.

Assuming the device to beso constructed, and applied to the shaper inthe manner shown, its usual mode of use is as follows: With the-carriageshifted to the position relative to the cutter heads as shown in Fig. 2,a wooden rail isplaced on the carriage base plate and against thevertical face of shelf 51, as is the rail 14 in Fig. 4. Then, ifdesired, another rail is placed on the shelf and flatly againsttheflange 56 as is the rail 10. Then, while'holding the rails in place,by hand or by means of the clamp, the carriage is advanced past thecutter heads. The two upper cutters will operate on the end of thehigher rail to form the tenon thereon,'and the lower cutter will form agroove in the lower rail. The rails are then released and removed fromthe carriage and it is brought back to' starting position forre-loading. The operation is easy, and the'work onthe pieces accuratelyperformed.

While the present device has been described as designed for operation onwindow sash pieces, it can readily be adapted for the making of piecesfor other uses, and itiis not desired that it be restricted to this use.p

The presentinvention is characterized by the specific parts employed andtheir combination, and in adaptation of this trackway and carriage, withits provision for holding one or two pieces, to a common type of shaper.

Having thus described my invention, what :I

claim as new therein, and desire to secure by Letters-Patent, is-- 1. Anattachment device for a wood work n machine of the shaper type which ischaracterized by a pedestal having a side wall thereof formed withpaired vertical guideways, a bearing mounted for vertical adjustment inthe guideways, removable cover plates normally applied over saidguideways to retain the bearing therein, a driven shaft mounted in saidbearing and cutter heads mounted on said shaft; said attachment devicecomprising a pair of brackets having base portions adapted to be securedover said guideways in lieu of said cover plates to retain the saidbearing and having horizontal arms extended therefrom at the same level,a pair of rails mounted on said arms, a. table mounted on said rails forreciprocal travel past said cutter heads, and clamping means on saidtable for holdin pieces of work thereon for engagement by said cutterheads incident to the reciprocal movements of the carriage.

2. A machine as recited in claim 1 wherein the said clamping meanscomprises an abutment rail that is fixed to the bed of the carria alongone side edge thereof, at a right angle to the direction of travel ofthe carriage and a post extended upwardly from the opposite side edge ofthe said bed, a lever pivoted at one end to the upper end of the postand having a handle' portion extended across and beyond said abutmentrail, and a holding shoe pivoted on thelever between its ends andextended downweirdly therefrom to engage against work pieces as placedon the carriage.

3. A machine as recited in claim 1 wherein a hand screw is fixedlymounted for rotation on the pedestal and is threaded through a lug onthe bracket mounting plate for the vertical adlustment of the hearing asa means of adjusting the working level of the cutter heads.

ORSON P. SMITH.

. vReferences Cited in the file of this patent I UNITED STATES PATENTSNumber

